A comparison of northern hemisphere winds using SuperDARN meteor trail and MF radar wind measurements
A comparison of northern hemisphere winds using SuperDARN meteor trail and MF radar wind measurements
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使用 SuperDARN 流星轨迹和 MF 雷达风测量对北半球风进行比较
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
C. Hall
中科院分区：
文献类型：
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作者：
G. Hussey;C. Meek;D. André;A. Manson;G. Sofko;C. Hall
超级双极光雷达网络（Super- Dual oral Radar Network, Super- darn）的主要目的是使用成对雷达，从大范围（通常超过~ 900公里）的后向散射的多普勒测量中推断f区对流。在每台高频雷达附近，最近的距离约为165-400公里，主要是流星轨迹回波。一旦形成，这些流星轨迹的运动通常由80-110公里高度范围内的中性风控制。通过结合给定SuperDARN雷达的所有16个接收波束（方位角~ 52°）的视距速度，可以确定流星轨迹高度范围内的整个水平风矢量场。仰角也使用干涉仪模式测量，因此，原则上可以从组合的距离和仰角数据中获得高度信息。与同一位置（加拿大萨斯卡通）的中频风雷达的中性风测量值的比较表明，在~ 95 km高度上，两个雷达系统之间的一致性很好。基于这些详细的比较，开发了一种简单的通用方法，用于确定所有具有广泛纵向覆盖的superdamn雷达的二维风。与用于潮汐和行星波动力学研究的其他系统进行比较是必要的，并且证明对于获得良好的superdam中性风运动分析是必不可少的。挪威萨斯卡通和特罗姆瑟的中频雷达位于北半球6个超级雷达网络的西端和东端。两种雷达在两个季节间隔（9月和12月）的比较表明，superdamn雷达提供了良好的潮汐纵向覆盖，支持更详细的中频雷达数据。两种制度相辅相成。
The main purpose of the Super Dual Auroral Radar Network (Super-DARN) is to use paired radars to deduce the F-region convection from Doppler measurements of backscatter seen at large ranges, typically beyond ∼900 km. Nearer to each HF radar, the nearest ranges at ∼165–400 km are dominated by meteor trail echoes. Once formed, the motion of these meteor trails is normally controlled by neutral winds in the 80–110 km altitude range. By combining the line-of-sight velocities from all 16 receiver beams (∼52° in azimuth) of a given SuperDARN radar, it is possible to determine the full horizontal wind vector field over the meteor trail height range. Elevation angles are also measured using an interferometer mode and as such height information can, in principle, be obtained from the combined range and elevation angle data. A comparison with neutral wind measurements from a colocated (Saskatoon, Canada) MF wind radar indicates good agreement between the two radar systems at heights of ∼95 km. Based on these detailed comparisons, a simple common method for determining two-dimensional winds for all SuperDARN radars, which have extensive longitudinal coverage, was developed. Comparisons with other systems used for dynamical studies of tides and planetary waves are desirable and prove to be essential to obtain a good SuperDARN neutral wind motion analysis. The MF radars at Saskatoon and Tromso, Norway, are located near the western and eastern ends of the Northern Hemisphere network of six SuperDARN radars. Comparisons between the two types of radars for two seasonal intervals (September and December) show that the SuperDARN radars provide good longitudinal coverage of tides in support of the more detailed MF radar data. The two systems complement each other effectively.